Gore-cutting machine



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GORE GUTTINGMAGHINE.

No. 524 501. Patented Au 14, 189

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GORE CUTTING MACHINE.

Patented Aug. 14, 1894.

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7 Sheets-Sheet 4.

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No.y 524,501.

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No. 524,501. Patented Aug. 14, 1894.

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(No Model.) 7 Sheets-Sheet 6. J. N. KENDALL.

. GORE CUTTING MACHINE. No. 524,501. Patented Aug. 14, 1894.

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Patented Aug. 14, 1894.

UNITED STATES PATENT GEEICE.

JAMES N. KENDALL, OF NASHUA, NEV HAMPSHIRE.

cons-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 524,501, dated August 14, 1894:.

Application filed August 31, 1893. Serial No. 484,442. (No model.)

To a/ZZ whom it may concern:

Be it known that I, JAMES N. KENDALL, of Nashua, in the county of Hillsborough and State of New Hampshire, h ave invented certain new and useful Improvements in Gore- Cutiing Machines, of which the followingis a specification.

The object of this invention is to provide a machine for cutting elastic gores for boots and shoes, an operation which has heretofore been found necessary to perform by hand.

The invention resides chiefly in means whereby the cutter is turned to the proper angles for cutting the opposite sides of the gore.

It also has in view certain improvements in feed mechanism and other details hereinafter described and claimed.

The accompanying drawings illustrate a construction for carrying out the invention.

Figure 1 shows a "top plan view of a machine embodying the invention. Fig. 2 shows a side elevation of the machine. Figs. 3 and 4 each show a central longitudinal section of the machine, the knife being elevated in one view, and lowered inthe other. Fig.5 shows a front elevation of the machine. Fig. 6 shows a partial front elevation and partial section. Fig. 7 shows a section on line 7-7 of Fig. 2, the parts appearing on an enlarged scale. Fig. 8 shows a section on line 8--8 of Fig. 7. Figs. 9 and 10 are detail views of parts appearing in Fig. 7. Fig. 11 shows a detail of the means for shifting the cutter. Figs. 12 and 13 showsectional views of adjusting means for regulating the angle of the cutter, Fig. 12 bei-ng a longitudinal section, and Fig. 13 a cross section on line 13`13 of Fig. 12. Figs. 14 and 15 show details of the stationary-knife bed, Fig. 14. being a top plan View, and Fig. 15 a longitudinal section. Fig. 16 shows a detail cross section View of the bearings for the feed-rollers; Fig. 17 shows a strip of material from which the gores are cut, a gore being represented as having been severed therefrom, and broken lines indicating the lines on which the cuts are made.

' The reference lettera designates a` table which is supported on legs a', and over which the strip 2 passes, said strip being guided between adjustable gages az extending lengthwise of the table. The surface of the table is marked as indicated in Fig. `1, so that the proper adjustment of the gages for different widths of stock may be readily determined.

Feed rollers a3 citare located at the front end of the table, and the lower one,a4, is su pported in fixed bearings below the table and projects through an opening in the table, while the upper one, a3, is supported in yielding bearings a5 connected withthe table by rods a6, (see Fig. 16) and drawn toward the table by springs a7 on said rods and occupying recesses in the table.

Arms as are mounted on the journals of the roller 0,3, and are squared at 'the lower ends so as to rest evenly on the table and are formed with cam-like projections a9 which, when the arms are turned toward the front of the machine, cause the roller a3 to be separated from the roller a4 by theirengagement with the table. by rods am, which constitute handles for turning the arms and together with latter form a frame. By turning this frame forward the feed-rollers may be separated to admit the stock 2, and when the frame is turned back again the top roller will be drawn against the lower one by the springs as aforesaid, andthe square ends of the arms will he drawn against the table so that the frame will be held stiff.

The lower feed-roller d4' is driven through the following connections with the driving shaft b: A pinion b on said driving shaft meshes with a gear b2, on a counter-shaft b3 which also carries a disk b4; the latter carries a crank-pin to which a pitman b5 is connectedand the opposite end of said pitman is connected with a wrist-pin b fastened in an arm b, having a slot at one end which receives a screw Z2? entering a stud bs supported by the table a (see Fig. 7) and having a collar b9 to bear against the arm h6, and a head b1@ by which to turn it. The stud bs supports a gear c which meshes with a pinion c on the feed-roller a4, and has an extended hub receiving a drum c2 which is keyed thereto. An arm cs is looselymounted on the hub of the gear between the latter and the drum, and extends down behind the arm bwith which it is connected by a bolt c4, said bolt being fastened in the arm c3, and extending through a slot in the arm h6. The arm c3 is The arms a8 are connected ICO slotted throughout a portion of its length as shown at c5, and a block c6 engages said slot, and has a shoe c7 at its upper end engaging the inner side of the rim of the drum c2; the said block carries a dog e8 fulcrumed to it, and having a cani-face to bear against the outer side of the :rim of the drum c2, and said dog is actuated by a spring e9 in a direction to cause it to bind against the drum so that the rim of the latter is gripped between it and the shoe c7. Thus under one direction of movement of said arm b, the dog cs will slip owing to the cam-like formation of its engaging face and no motion will be imparted to the drum. Backward rotation of the roller a4 1s prevented by the engagement of a pawl o with a ratchet o on said roller. Now it is obvious that by changing the distance betweenv the wrist-pin bu and the stud bs, the amount of rotary motion transmitted to the gear c may be varied and consequently the extent of the feed. By changing the distance between the points named, I am enabled to adjust the machine for gores of dierent widths.

It will be observed that the connection between the arms be and o3 is such as to cause them to turn together, but also provides for longitudinal movement of the arm b independent of the arm c3. Such movement of the arm b@ is effected by means of a screw d, which is supported in a nut d on the plate 116 and passes through a threaded hole in an enlargement d2 of the bolt c4.

A disk 07,3 having a spiral-like perimeter is mounted on the bolt c4, and said perimeter is notched as' at d4, and the notches are numbered consecutively from the lowest portion of the perimeter to the highest, the numbers running from l to 13, and designating the slze of shoe. A nut d6 is screwed on the bolt to bear against the disk d3. Alug d5 fastened to the arm h6 projects over the disk d3.

To eect adjustment of the feed to advance proper lengths of stock for gores for a certain size of shoe, the bolt 57 and nut d6 are loosened, and the disk dais turned until the notch numbered to correspond with the size of shoe is brought under the lug d5. Then the screw d is turned to bring said lug tight upon the disk, and the nut d6 an'd bolt 67 are tightened. By this adjustment the position of the wristpin bu is determined and the proper feed established.

The table a extends forward beyond the feed-rollers as at e and has an oblique shoulder e', and at the-base of said shoulder a shelf e2 which supports a bed es having secured to 1t a stationary knife e4, the said bed being pivotally connected with the shelf bya trunnion e5 engaging a circular hole in the shelf and having a screw-threaded lower end which receives a nut e6. The bed e3 projects on each side of the supporting shelf e2 and is formed with bosses e7 through which rods es extend, said rods being capable of sliding vertically in the said bosses. These rods support cross-bars e e1o between them at their upper and lower ends. A knifef is pivoted to an ear f on the bed e3, and has a slot f2 which is engaged by a pin f3 fastened to the upper cross-bar e9, and said knife is adapted to coact with the stationary knife e4. The frame composed of the rods es and bars e9 @1 is supported by a lever g which is pivoted to a hanger g under the table. The connection is effected by means of a bolt g2 in the bar em, and links g3 connecting the head of the said bolt with the said lever, and theframe may turn on the bolt. f

The frame is reci proc-ated and consequently the knifefby a Wrist-pin hfastened between disks h on the shaft b3 and adapted to act against the lever g and a bell-crank lever h2 pivoted to a bearing under the table @aand having one arm projecting over the lever g. and the other into the path of the Wrist-pin h so that when the latter acts against it, the other arm presses said lever g down.

The upper cross-bar e9 supports a presserfoot i, rods t', being fastened to said presserfoot and extending through the said cross-bar, and springs 2 surrounding the rods. This presser-foot comes down upon the stock and holds it fixed while the cutter acts.

The cutter is shifted from one angular position to the other through the following means: A pinion j on the shaft b3 meshes with a gear j which carries a crank-pin. A pitman i2 is connected with thiscrank-pin and extends forward and through the head of a bolt 7'8 in the lowercross-bar 010. The pitman carries collarsj4j5 on opposite sides of said bolthead and under reciprocations of the pitmanj'2 these collars act against said bolt-head, and thereby shift the cutter. Sufficient space is left between collars l7'4 and 7'5 to allow time for the knife j' to descend and return while the is formed with projections ji which engage said slot. A screw-threaded rodj8 occupies a bore in the pitman and is arranged to turn, but not to move lengthwise therein, and this rod engages' screw-threads formed in the proj ections j? o f the collar j4. It will be seen that by turning the screw-threaded rod, the collar may be adj usted on the pitman. A jam-nut jf is screwed on the rod and serves to lock the same at different adjustments. The other collar ji engages screw-threads on the pitman and may be adjusted by simply turning it, a jam-nutty'10 being provided to lock said collar.

The operation of the machine briefly stated is as follows: With the cutter standing at the proper angle to cut one side of a gore,.the stock is fed in and its end cut off on that angle. The feed-rollers a3 and a4 feed the proper length of stock to form a gore, over IOO tor;

IIO

the bed e and the cutter is shifted to the proper angle for the opposite side of the gore. Then the knife f descends and severs the gore, and the feed-rollers advance the stock and the cutter is again shifted. Thus the stock will be cut as indicated bythe broken lines shown in Fig. 17, and the gore 3 appear as shown in said iigure.

With a machine of this character each gore will ,be exactly the same size, and there will be no waste of stock, and a great saving in time and labor is effected.

It is evident that the invention may be embodied in dierent form than here shown, and hence is not limited in this respect. l

Having thus described my invention, what I claim as new, and desire to secure by Letters l. The combination of a cutter swiveled to render it capable of assuming different angular positions with respect to the feed, intermittent feed-mechanism for advancing the work past the cutter, and a prime mover operatively connected with the swiveled cutter, and the feed-mechanism whereby a positive relation is established between them, and the cutter is turned with each advance of the stock by the feed-mechanism.

2. The combination of a swiveled support,

a knife thereon movable to cut, feed-mechanism to advance the work past the knife, and a prime mover operatively connected with the knife-support, the knife, and the feed-mechanism whereby a positive relation a sliding frame on the swiveled bed and operatively connected with the pivotal knife, a reciprocating agent, and a swivel-connection between the same and the said frame.

VIn testimony whereof I have signed my name to this specification,in the presence of two subscribing witnesses, this 22d day' of August,A. D. 1893.

JAMES N. KENDALL.

.VVitnessesz EDWIN B. GoULD, J. N. WooDwARD. 

